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Homeostasis and Body Systems Quiz

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Questions and Answers

Where is interstitial fluid located?

In the blood vessels

In the lymphatic vessels

Inside the cells

In the spaces between cells (correct)

Which of the following fluids is an example of extracellular fluid (ECF)?

Nuclear fluid

Cytosol

Mitochondrial fluid

Blood plasma (correct)

Which of the following statements about homeostasis is TRUE?

Homeostasis is the process of breaking down food into smaller molecules

Homeostasis is the ability to maintain a constant internal environment regardless of external changes (correct)

Homeostasis is the process of eliminating waste products from the body

Homeostasis is the state of being at equilibrium with the external environment

What is a characteristic of exergonic reactions?

They release more energy than they absorb. (C) Signup and view all the answers

How do enzymes primarily function in biological reactions?

By catalyzing reactions much faster than without them. (A) Signup and view all the answers

What is meant by the term 'active site' in enzymes?

It is the specific region where substrate molecules interact. (D) Signup and view all the answers

What role does the receptor play in homeostatic regulation?

It receives information about a change in the environment. (D) Signup and view all the answers

How does positive feedback differ from negative feedback?

Positive feedback enhances the stimulus. (A) Signup and view all the answers

What is the function of the control center in homeostatic regulation?

To compare information and initiate a response. (C) Signup and view all the answers

In negative feedback, what is the outcome when the body temperature rises?

The feedback signal causes a decrease in body temperature. (D) Signup and view all the answers

What component of homeostatic regulation responds to signals from the control center?

Effector (D) Signup and view all the answers

What primarily influences the rate of diffusion of substances across a membrane?

Lipid solubility and concentration gradient (C) Signup and view all the answers

What is a gap junction?

a membrane channel (A) Signup and view all the answers